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NGK Iridium Spark Plug Set LTR71X-II
NGK Iridium Spark Plug Set LTR71X-II


 

WARNING : California Residents Prop 65 Information
Price:$47.00


Availability: Usually Ships in 24 to 48 Hours
Product Code: NGK-LTR71X-II


Spark Plug Gap:


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Description
 

NGK Iridium Spark Plug Set LTR71X-II

Pre-gapped by Mountune.

The EcoBoost engine operates under extreme conditions including high cylinder pressures. The spark plugs are subject to rapid wear rates, even at standard performance levels. Engines running higher boost points or increased levels of tuning can experience reduced spark plug life resulting in lower engine performance, misfires and rough idle. Increased wear is typically seen in the form of increased spark plug gap and degradation of the electrode. Using spark plugs that are optimized for increased power insures maximum performance. Includes pre-gapping by Mountune to optimized setting.

The NGK LTR71X-II is one step colder than the original spark plug and perfect for those running additional boost pressure and typical bolt on modifications.

Price is for a set of 4 and includes gap setting !

Application:
Focus ST 2013-2018
Focus RS 2016-2018

Features:
  • Smoother acceleration
  • Perfect for high boost street use
  • Pre-gapped by Mountune - Choose your application when ordering!

WARNING:
This part has been designed and is intended for off-highway application only. Installation of this part on a vehicle that is driven on public roads may violate U.S. and Canadian laws and regulations relating to emission requirements and motor vehicle safety standards. Click Here for Emissions compliance information.

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Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 51 Write a review »

  0 of 0 people found the following review helpful:
 
5 of 5 February 15, 2020
Reviewer: David Cook from Morgan Hill, CA United States  


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  0 of 0 people found the following review helpful:
 
4 of 5 February 11, 2020
Reviewer: Dylan Jones from Villa Park, IL United States  
Haven’t put these on yet and I meant to buy the ST plugs not the RS plugs but to heck with it, it’ll work just fine

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  0 of 0 people found the following review helpful:
 
5 of 5 December 13, 2019
Reviewer: David Ayuso from Vista, CA United States  
Amazing products gotta oh you play baby

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  0 of 0 people found the following review helpful:
 
5 of 5 Who I recommend! December 3, 2019
Reviewer: Tyler Powell from Nampa, ID United States  
Only spark plug I use I own a fusion so not alot moutune offers but take advantage of what works! Asked for stickers with one of my orders didn't get any but still order plugs here when I need umm

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  0 of 0 people found the following review helpful:
 
5 of 5 Much needed November 19, 2019
Reviewer: Brandon from PA  
All I can say is wow. I’m running a Cobb ots stage 2 93 oct with just an intake and intercooler, once I added these plugs I felt a substantial difference in idle quality and an even bigger difference when I took it out on the road. The focus st already has virtually no boost lag and these plugs amplify the low end boost and overall responsiveness of the engine. It doesn’t matter what rpm I’m at if I give her just a little gas I get instant 2-4 psi of boost and I also noticed the engine doesn’t retard timing pretty much at all anymore and mid throttle pulls advance 4 degrees pretty much instantly.  When I heard other reviews about one step colder plugs I didn’t really believe all of it but then I decided to try it and now I’ll never go back to oem plugs. Give these a try and feel the low end torque difference .

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